Chill for open-hearth furnaces.



L. L. KNOX.

CHILL FOR OPEN HEARTH FURNACES.

APPLICATION FILED MAR. M. 1916.

Patented Jam l, 1918.

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L. L. KNOX.

CHILL FOR OPEN HEARTH FURNACES APPLICATION FILED MAR. 14, 1916.1,251,787. Patented Jan. 1, 1918.

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CHILL FOR OPEN HEARTH FURNACES.

APPLlCATlON FILED MAR. 4, 3916. A T

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INVENTOR WITNESSES CHILL FOR OPEN HEARTH FURNACES.

APPLlCATlON FILED MAR. 14, I916. 1,251,787 Patented Jan. 1, 1918.

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LUTHER L. KNOX, F AVALON, PENNSYLVANIA, ASSIGNOR .TO BLA'W-KNOX COMPANY,OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

CHILL FOR OPEN-HEARTH FURNACES.

Application filed March 14 To all whom it may concern:

Be it known that I, LUTHER L. KNOX, a citizen of the United States,residing at Avalon, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement in Chills forOpen- Hearth Furnaces, of which the following is a full, clear, andexact description, reference being bad to the accompanying drawings,forming part of this specification, in which Figure 1 is a longitudinalvertical section of a portion of an open hearth furnace structure havingmy invention applied thereto;

Fig. 2 is an end view of one of the port structures of the furnace;

Fig. 2 is a cross section on the line ll-ll of Fig. 2;

Fig. 3 is a front elevation partly broken away of the cooling plate;

Fig. 4 is a section on the line lVlV of Fig. 3;

Fig. 5 is a front elevation of the supportin casting;

big. 6 is a front elevation of a modified form of chill; and

Figs. 7 and 8 are sections on the lines VIIVII and VIII-VIII,respectively, of Fig. 6.

My invention has relation to chills for open hearth furnace structures,and more particularly to the chills which are used on the ends of thefurnace body and also at the mouth ends of the gas and air inlet ports.

The object of my invention is to provide a chill of simple constructionwhich can be readily applied to the furnace and as readily removedtherefrom when necessary for re airs or renewals.

eferring first to that form of my invention shown in Figs. 1 to 5,inclusive, the numeral 2 designates one end portion of the hearthportion of an open hearth furnace,

and 3 a portion of the uptalres and fine structure at one end of thefurnace. 4- designates the gas inlet port, and 5 the air inlet port.

The construction of these ports may be, in general, of any well known orusual character, and need not be described in detail as they form nopart of my present invention.

The chill embodying my invention is shown as applied to the mouth endsoi the port structure, and a similar chili is applied tn the end or thehearth structure. These Specification of Letters Patent.

opening which it partially surrounds.

Patented Jan. 1, 1918.

, 1916. Serial No. 84,051.

two chills are practically duplicates of each gthir and a description ofone will suffice for In the form shown in these figures, the

top portion of the chill consists of a plate member 6, adapted to fitagainst the end face of the part of the structure to which it applied,and which is formed with a water box 7 at its lower edge portion. Thiswater box may be formed either by bending upwardly and back upon itselfthe lower edge portion of the plate 6; or, as specifically shown in F4:, it may be formed by welding and riveting to the plate 6 a separatebox-forming plate member 8. The water box is of upwardly arched form toconform approximately to the shape of the It reinforced or stiffened by9, secured thereto, and is supported in place by a frame member 10,preferably of cast iron, to which it is bolted at 11. The casting 10 maybe of any suit able form and may be cored out at intervals, as indicatedat 12, for the purpose of making it lighter. The casting and the upperedge portion of the plate member 6 are shown as having registering slots13, to receive the bolts 14, by which the chill is secured to thefurnace structure. The leg or side portions of the chill each consistsof a plate member 15, provided with a water box 16, which may be formedin the same manner as the water box 8, before referred to, the outerportion of the plate being suitmay be suitably means of angles ablystiffened by means of angles 17 and chill may seat upon the upper endsof the water box 16. The angles or reinforces 17 provide means forattaching the legs to the furnace structure.

The water box is preferably provided with an inlet pipe 18 at each endfor relatively cool water, with a central ofi'take pipe or pipes 19leading from its highest portion. The water box it may also be providedwith any suitable water-circulating connection 20.

The bottom member oi the chill may con sist of a separate casting .20having a cooling pipe or passage 20 therein.

In the form or my invention shown in Figs. 6. 7 and 8 the top and sideor leg portions off the chill are formed integrally wl h each other, thesaid members being properly shaped so that the water box Willsubstantially surround the port or furnace opening, except for a shaftspace at the bottom. The lateral and upper portions of the plate 21,which carries the Water box, is preferably provided with the reinforcingand supporting castings 22, by means of which the chill can be securelybolted to the furnace structure. Any suitable arrangement of bullies 22,may be provided Within the Water box for the purpose of obtaining an efcient water circulation therein. 2a designates watencirculatingconnections.

it will be readily seen that in case the Water boxes fail from anycause, the chill can be readily removed from the furnace structure andthe box repaired or renewed without renewing the reinforcing andsupporting members.

My invention is susceptible of various modifications both as to the formof the water boxes and as to the mode of supportin; them, the essentialfeature in each case icing that the Water shall be formed of plate orsheet metal with separate attaching and reinforcing members. The Watercirculation may also be Widely varied; the boxes may be made either in asingle piece, in Figs. 6, 7 and 8, or in any desired number of sections,and various other changes may be made within the scope of the appendedclaims.

I claim:

1. A removable chill for furnaces comprising; a Water box, one Wall ofthe Water box being formed of a sheet or plate, said plate extendingbeyond the Water box to form a securing flange, ant. a separatereinforcing and supporting member secured to the inner side of saidplate adjacent tothe Water box. a portion of such reinforcing memberlying between the parallel planes of the inner side of said plate andadjacent Wall of the water box, substantially as described.

2. A furnace chill for open iearth furnaces having a mouthv at one endand an air and gas port leading to said month, said chill having a Waterbox, one -Wall of the water box being formed of a sheet or plate, asecond Wall of said Water box lying in a plane parallel to the plane ofthe plate, said plate extending beyond the Water box, and a reinforcingmember or frame connected to basics of this patent may be obtained forfive cents each, by addressing the the inner side of the plate adjacentto the Water box, a portion of said reinforcing member or frame lyingbetween the vertical planes of the inner face of the plate and the Wallof the box parallel thereto, and means for securing said chill inposition between the mouth of the furnace and the air and gas ports,substantially as described.

An open hearth furnace having a mouth at one end and an air and gas portleading to said mouth, a plurality of chills between the mouth of thefurnace and the air and gas port, each chill having a Water box, oneWall of each chill being formed of a sheet or plate, a second Wall ofeach of said Water boxes lying parallel to the planes of the plates,such plates extending beyond the Water box, and a reinforcing member orframe connected to the inner side of each plate adjacent to the Waterbox on said chill, a portion of each reinforcing member lying; betweenthe vertical planes of the inncr face of the plate and the Wall of thebox parallel thereto, said reinforcing members lying adjacent to eachother, and means for securing the chills in position between the mouthof the furnace and the air and gas ports, substantially as described.

l. A removable chill for furnaces having a Water box, one Wall of theWater box being formed of a plate member having a T l openingtherethrough, said plate beyond the Water box to form a se curingflange, a second plate having: a body portion extending parallel to themain plate which forms a second Wall of the water box, the lastmentioned plate having flanges which extend at right angles to the bodythereof, and which are secured to the main plate, said flanges formingthe other walls of the Water box, and a plurality of separatereinforcing and supporting members secured to the inner side of the mainplate adjacent to the Water box, portions of said reinforcing memberslying between the vettical planes of the inner side of the rrfain plateand the body of the second plate, sub stantially as described.

testimony whereof, l have hereunto set my hand.

LUTHER L.

l fitnesses Breanne, FRANK Born.

Commissioner of retreats,

Washington, D. ll.

